Caren Marie Pfieffer, NP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

95008587 Issued in CA

Practice address

195 Page Mill Rd Ste 103
Palo Alto, CA 94306-2073

Phone

(888) 731-8994

NPI assigned

Jul 8, 2013

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in AZ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: caren.pfieffer.1@27069.direct.athenahealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• District Medical Group, Inc

  • Anatomic Pathology & Clinical Pathology Physician
  • Phoenix, AZ
  • NPI 1336472448
  Medicare reassignment NPD
• Jewish Family & Children'S Service

  • Community/Behavioral Health Agency
  • Phoenix, AZ
  • NPI 1023174455
  Medicare reassignment NPD
• Summit Medical Group Arizona LLC

  • Family Medicine Physician
  • Glendale, AZ
  • NPI 1053810622
  Medicare reassignment NPD
• Cigna Health Care of Arizona Inc.

  • Multi-Specialty Clinic/Center
  • Phoenix, AZ
  • NPI 1619048048
  NPD
• Cigna Health Care of Arizona Inc.

  • Multi-Specialty Clinic/Center
  • Glendale, AZ
  • NPI 1689745333
  NPD
• Cigna Healthcare of Arizona, Inc.

  • Multi-Specialty Clinic/Center
  • Scottsdale, AZ
  • NPI 1073626404
  NPD
• Cigna Healthcare of Arizona, Inc.

  • Multi-Specialty Clinic/Center
  • Peoria, AZ
  • NPI 1730417676
  NPD
• District Medical Group, Inc

  • Emergency Medicine Physician
  • Phoenix, AZ
  • NPI 1144624339
  NPD
• District Medical Group, Inc

  • Psychiatry Physician
  • Mesa, AZ
  • NPI 1437482544
  NPD
• Jewish Family & Children'S Service

  • Community/Behavioral Health Agency
  • Phoenix, AZ
  • NPI 1467520577
  NPD
• Jewish Family & Children'S Service

  • Community/Behavioral Health Agency
  • Phoenix, AZ
  • NPI 1609939214
  NPD
• Integrative Womens Care PC

  • Obstetrics & Gynecology Physician
  • Palo Alto, CA
  • NPI 1972266732
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1373241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778803200000",
    "number": "1124469085",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "14355 MIRANDA WAY",
            "city": "LOS ALTOS HILLS",
            "state": "CA",
            "postal_code": "940222032",
            "telephone_number": "888-731-8994"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "195 PAGE MILL RD STE 103",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943062073",
            "telephone_number": "888-731-8994"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "421 Fayetteville St Ste 1100",
            "address_purpose": "LOCATION",
            "city": "Raleigh",
            "state": "NC",
            "postal_code": "276013000",
            "country_code": "US",
            "telephone_number": "888-731-8994",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1000 N West St Ste 1200",
            "address_purpose": "LOCATION",
            "city": "Wilmington",
            "state": "DE",
            "postal_code": "198011058",
            "country_code": "US",
            "telephone_number": "888-731-8994",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15333 N Pima Rd",
            "address_purpose": "LOCATION",
            "city": "Scottsdale",
            "state": "AZ",
            "postal_code": "852602783",
            "country_code": "US",
            "telephone_number": "888-731-8994",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "14355 Miranda Way",
            "address_purpose": "LOCATION",
            "city": "Los Altos Hills",
            "state": "CA",
            "postal_code": "940222032",
            "country_code": "US",
            "telephone_number": "888-731-8994",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PFIEFFER",
        "first_name": "CAREN",
        "middle_name": "MARIE",
        "credential": "NP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-07-08",
        "last_updated": "2026-05-15",
        "certification_date": "2026-05-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "AZ",
            "license": "AP5092",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "DE",
            "license": "LG-0012577",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "NC",
            "license": "5019313",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95008587",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kevin Petersen, MD, MPH
• Jeffrey Scott Peterson, MD
• Kaylie Danelle Peterson
• Kendra Peterson
• Shahnaz Peyman, R.PH
• Kobi Pflueger, NP
• Madhura Yeshwant Phadke, MD
• Hanh T Pham-Larson, PHARM.D
• Chuong Nguyen Pham, DPM
• Danielle Pham, PHARMD

• Family Nurse Practitioner in Palo Alto, CA
• Providers in Palo Alto, CA by specialty
• Family Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.